93.6% is the change from 344 to 666
Calculation steps:
[( 666 - 344 ) ÷ 344] x 100 = 93.6%
Formula
Percentage change = [(666 - 344) / 344] x 100
Subtract the new number by the original number
666 - 344 = 322
322 ÷ 344 = 0.936046511627907
0.936046511627907 x 100 = 93.6%